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How do I change read/write mode for a file using Emacs?
...t args)
"Run a unix command and, if it returns 0, return the output as a string.
Otherwise, signal an error. The error message is the first line of the output."
(let ((output-buffer (generate-new-buffer "*stdout*")))
(unwind-protect
(let ((return-value (apply 'call-process command nil
...
How to print to console when using Qt
...t useful:
#include <QTextStream>
QTextStream out(stdout);
foreach(QString x, strings)
out << x << endl;
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What does pylint's “Too few public methods” message mean
...lass derived from NamedTuple" pattern.
Python 2 - namedtuples created from string descriptions - is ugly, bad and "programming inside string literals" stupid.
I agree with the two current answers ("consider using something else, but pylint isn't always right" - the accepted one, and "use pylint sup...
IPC performance: Named Pipe vs Socket
Everyone seems to say named pipes are faster than sockets IPC. How much faster are they? I would prefer to use sockets because they can do two-way communication and are very flexible but will choose speed over flexibility if it is by considerable amount.
...
About Android image and asset sizes
...i (240 dpi, High density screen) - 72px x 72px (0.38) (2)
xhdpi (320 dpi, Extra-high density screen) - 96px x 96px (0.5) (2.67)
xxhdpi (480 dpi, Extra-extra-high density screen) - 144px x 144px (0.75) (4)
xxxhdpi (640 dpi, Extra-extra-extra-high density screen) - 192px x 192px (1.0) (5.33)
My sh...
Check if a Windows service exists and delete in PowerShell
...$ServiceName.
# Returns a boolean $True or $False.
Function ServiceExists([string] $ServiceName) {
[bool] $Return = $False
# If you use just "Get-Service $ServiceName", it will return an error if
# the service didn't exist. Trick Get-Service to return an array of
# Services, but o...
How can I process each letter of text using Javascript?
I would like to alert each individual letter of a string, but I am unsure how to do this.
23 Answers
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What is the difference between “px”, “dip”, “dp” and “sp”?
...tual screen sizes into four
generalized sizes: small, normal, large, and extra-large.
Screen density
The number of pixels within a physical area of the
screen; usually referred to as dpi (dots per inch). For example, a
"low" density screen has fewer pixels within a given physical area,...
语音识别 报错问题：No Activity found to handle intent { act=android.sp...
语音识别仿真报错，安装到手机端也报错https://www.fun123.cn/reference/info/#AppEntry
请参考一下这个教程，你上面报错的原因是手机上没有安装语音识别引擎，这里推荐“讯飞语音+”，下载地址：https://www.pgyer.com/yyyq
Find and replace - Add carriage return OR Newline
In the case of following string to be parsed.
5 Answers
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